Dump wagon



April T. c. HARVEY 1,998,317

DUMP WAGON Original Filed Feb. 8, 1955 '4 Sheets-Sheet 1 IILUeILZOP:Theodore GErz)% T. c. HARVEY 1,998,317

DUMP WAGON Original Filed Feb. 8, 1933 4 Sheets-Sheet 2 m 9 9 0 on e 0 wa P Q Q Q 0 Eu 1 O O a I 0. mm mm 1 L; I I @FI mo P? i\ QP [VPH t. F G.M F v F April 16, 1935.

fwerdo 7 Theodore Cufirdg, 7 di'itorroe y.

T. c. HARVEY DUMP WAGON Original Filed Feb. 8, 1933 4 Sheets-Sheet 4evil . Theodore Cflirrzje April 16, 1935.

Patented Apr. 16, 1935 UNITED STATES 1,998,317 DUMP WAGON TheodoreCQHarvey, Philadelphia, Pa.

Original application February 8, 1933, Serial No. 655,744. Divided andthis application October 14 1933;Serial No. 693,546

7 Claims. (01. 1s7--9) This invention relates to. dump wagons, the

; broad object of said invention being to provide a wagon of the classdescribed, which is capable of various operations in order to expediteand facilitate the discharge of the load therefrom in a manner mostconvenient tothe operator as well as minimizing trafiic obstruction.

Another object in view, is to provide in connection with a body havingthe characteristics above referred to; meansfor vertically raising andlowering the body in relation to the truck frame, without interferingwith the discharge of the load. The body is adapted to be raised eitherby hand or motive power.

, With the above and other objects view, the invention consistssubstantially in the combina- 1 tion, construction, location andrelative arrangement of parts, all as will appear more fullyhereinafter, as shown in the accompanying drawings andas finally pointedoutin' the'appended claims.

"In the accompanying drawings:

Fig. I is a side elevational view of adump'wagon constructed inaccordance with and embodying the principles of the present invention;

Fig. 2 is a vertical, longitudinal section through the dump wagon;

Fig. 3 is a front end elevational view of the dump wagon showing thetruck .body or double- .platform arrangement, skeleton body supports,load doors and outlet controls and revolving chute dis charge outlet,the forwardbody elevating standard being shown in cross section;

Fig.4 is a partial plan view of the dump wagon embodying the presentinventionthe forward elevating standard being shown :in horizontalsection; and r Fig. 5is a perspective view of part of the hand and motorcontrolled means for raising and lowering the body of the dump wagon.

As appears most clearly in Figure *1, the -main body Ill rests upon andis directly supported by.

I a foundation board or platform M having formed therein an elongatedcentral openingxlli. This platform I4 is adapted for vertical movementtogether with the main body In supported thereby by means tobe describedhereinafter. 1 Theplatform Mis, of course, disposed in a substantiallyhorizontal plane above the. vehicle frame :16. The foreand aft ends ofthe-vehicle frame side mem-- bers are preferably in theformo-f partiallyboxed-. in sections the vertical side walls of which are each providedwith a centrally disposed opening ll. r

Mounted upon the upper frame member l6 of the vehicle truck at the foreand aft ends there'- of are a pair of uprights or standards 28 and 29.

- Inasmuch as thesestandards and their associ-.

ated, parts are substantially alike, only one of them will be describedin detail, it being observed, as in Figure 3, that each of saidstandards has journalled in the upper end thereof a pair of pulleys 30and 3l,.these pulleys being arranged for rotation about-a commonhorizontally extending axis. Referring now more particularly totheforward standard 28. as shown in Figures 2 and 3, it will be observedthat the pulleys 30 and 3| are traversedby a flexible cable 32 which isemployed for raising and lowering the main body In. The free ends ofthis'calole 32 are respec tively attachedto the eyes 33 formed in the1113-,

31 which pass through apertures suitably provided in the shanks of thebolts.

, The two portions of the cablev 32 which respectively pass over thepulleys 3 0 and 3! extend downwardly through suitable apertures providedin the end extension 38 (see Figures 2 and 4) of the foundation board orplatform M, the looped or ,bight end of the cable being then passedaround a pair of pulleys 39 and 40 suitably journalled beneath the saidfoundation board or platform 14, the pulleys 39 and 40 beingrespectively arranged for rotation about axes which parallel each otherand extend at right angles to the axisof rotation of the pulleys 30 and3|. This arrangement. equalizes the strain imposed upon each end of thedoubled cable 32. It will be observed that the threaded ends of thebolts 34 project downwardly beyond the cross block 35 a sufficientdistance to permit adjustment of the,

' nuts 36 thereon and that byso adjusting these nuts upon theirrespective bolts the tension upon thecable 32 may be varied as desiredat the same time that the'foundation board or platform l4 may be leveledwith respect to the horizontal plane.

As appears most clearly in Figure 3, the cable block 35 is centrallyprovided with a threaded aperture 4| through which is threadedlyprojected a vertically arranged screw 42. The opposite ends'ofthe'c'ross'block '35 are respectively accommodated within guide channels43 formed in the sidewalls of the upright or standard 28. The upper endof the screw 42 is rotatably journalled within a bearing 44 suitablysupported within the upper end of the standard 28. The lower end ofthescrw'Z is in turn journalled,

as at '45,'in the vehicle frame member l6, said lower end-of the screw42 being provided with a downward extension carrying a worm gear 46.Theworm-gear 46 'of the forward screw 42 is adapted for:meshingengagement with a worm 41 which is fixed to a transverselyextending shaft 48 the opposite ends of which are suitably journalled inthe side walls of the vehicle frame. The worm gear 46 of the rear screw42 is similarly adapted for meshing engagement with a worm 49 which isfixed to a similarly journalled cross shaft 58, the cross shafts 48 and50 being arranged for rotation in a common plane disposed substantiallymidway between the top and bottom edges of the vehicle frame member l6.Respectively secured to corresponding ends Ofeach of the cross shafts 48and 50 are the gears 5| and 52 (see Figures 3 and 5), the latter gearsbeing respectively in mesh with the worms 53 and 54 commonly carried bya countershaft 55 extending longitudinally above the vehicle framemember I6. Secured to this countershaft 55 adjacent the forward endthereof is aworm gear 56 adapted for meshing engagement with a worm 51fixed to, for rotation with, a transversely extending shaft 58 to whichis secured, preferably intermediately to the ends thereof, a worm gear59. This latter worm gear 59 is driven by a'worm 60 carried by avertically arranged shaft 5|, the-lower end of the latter being gearedthrough a chain of meshed gears 62, to a laterally disposed verticalshaft 63, the lower end of which is provided with a bevel gear 54adapted for meshing engagement with a beveled gear 65 fixed to the endof a longitudinally extending drive shaft 66 adapted for control by aclutch and gear unit (not shown), the operating lever 61 (see Figure l)of which is situated by the operators seat. The drive shaft 56 isadapted to be driven by gears (not shown) suitably connected to adriving motor on the vehicle frame.

From the foregoing, it will be apparent that when it is desired to raiseor lower the main body is this may be readily accomplished by effectingthe rotation in one direction or the other of the drive shaft 68 whichwill, through the gear,

arrangements just described, effect the rotation of the longitudinallyextending countershaft 55 which in turn, through the cross shafts 48 and50 and their associated gears, will effect the rotation of the fore andaft screws 42-42 in unison in consequence of which the cross blocks 35will be commonly raised or lowered to correspondingly lower or raise thefoundation board or platform the latter being suspended between theloopedends of the cables 3232.

If desired, the raising or lowering of the foundation board or platforml4 may be effected by hand instead of by the motor (not shown) on thevehicle frame and to this end the vertically extending shaft 53 maybeprovided with an auxiliary worm gear 68 which is adapted for meshingengagement with a worm 69 fixed to and carried by a laterally projectingshaft Ill the free end of which is formed for connection with a crankhandle, any suitable means being employed for maintaining the body I!)in vertically adjusted position, such as a ratchet'carried by thelaterally projecting shaft 70 for engagement with a pawl or detent (notshown) ment for raising or lowering the body I 0 by hand facilitatessuch operation when the operator is standing on the ground beside thevehicle.

Preferably, the upper endsof the fore and aft standards 28 and 29 arerespectively covered by the caps l i 'retained in position by means ofthe screw bolts 12. These standards 28 and 29 are respectively slotted,as 13, in the faces thereof which present toward each other e in orderto This alternative arrangepermit the free vertical movement of thesubstantially T-shaped extensions 38 provided at either end of thefoundation board or platform 14, these extens ions being retained withinthe standards 28 and 29 and guided during the vertical movement of theplatform by the vertically extending ribs 74 which define the verticallyextending slots 13 in the standards. Preferably, thestandards are eachstrengthened and supported by braces or ribs 15 and 15 (see Figures 1and 4). I

Referring again to the elevation standards 28 and 29, it willbeobservedthat the vertical lift screws 42 are each provided at their upper andlower endswith smooth-surfaced or non-threaded portions, these portionsbeing slightly tapered and accommodating coiled springs '11. Thesesprings 11 operate to serve as safety devices in limiting the verticalmovement of the body in either direction. Thus, should the actuatingpower not be cut off when the body reaches its lowermost or uppermostposition, the smoothsurfaced portions of the screws continue to r0- tatefreely within the cable blocks 35 without, however, effecting anyfurther movement of the latter in one direction or the other. When thepower is reversed, however, the springs 11 are operative instantly toforce the blocks 35 into threaded engagement with the screw 42 whereuponfurther rotation of the screws will cause the blocks 35 to travelaxially thereof to either raise or lower the body as the case may be.

In addition to the supports for the main body H] which have hereinbeforebeen described, this body isfurther supported by crib work 18 shown mostclearly in Figures 3 and 4, the corner posts I9 of which are suitablyribbed or grooved to constitute vertical guides for the corner lugs 80(see Figure 4) fastened to each corner of the foundation board orplatform M. The crib work for supporting and guiding the foundationboard or platform 14 during its upward and downward movement is suitablyand rigidly founded upon the vehicle frame member I 6 by bolts or rivets8 I.

The body is self-emptying either in its elevated or lowered'position, itbeing apparent that the entire body may be readily raised or loweredeither by hand or by motor Without spilling any of the load. Also, byvirtue of the arrangement of the supporting crib work for the body andwithin which the'foundation board is guided in its vertical movement, itis not possible for the body to drop from'an elevated position unlessthe lifting cables at opposite ends of the vehicle break simultaneously.

It will be understood, of course, that the invention is susceptible ofvarious changes and modifications which may be made from time totimewithout departing from the real spirit or general principles thereof andit is accordingly intended to claim the same broadly, as well asspecifically, as indicated in the appended claims.

What is claimed as new and useful is:-

1. In a vehicle of the character described, in combination, a mainvehicle frame, a pair of vertically extending standards arrangedrespectively at the fore and aft ends of said frame, said standardsbeing of substantially channel cross-section and arranged with themouths thereof presenting toward each other, a horizontally disposedplatform for supporting a load receiving body, said platform beingprovided at the opposite ends thereof with extensions respectivelyadapted for accommodation within said channeled standards,

said platform being adapted for vertical movementwith respect tosaidvehicle frame, said channel posts constituting guides for saidplatform during said vertical movement thereof, a vertically extendingscrew rotatably journalled in said vehicle frame and extending upwardlywithin each of said channeled standards, a movable block in threadedengagement with said screw and adapted to travel vertically within eachof said standards upcn rotation of said screw, cable means respectivelyinterconnecting each of said vertically movable blocks with the oppositeextensions of said platform, and gear means for actuating said screws inunison whereby to effect the raising or lowering of said platform.

2. In a vehicle of the character described, in combination, a mainvehicle frame, a pair of vertically extending standards arrangedrespectively at the fore and aft ends of said frame, said standardsbeing of substantially channel cross-section and arranged with themouths thereof presenting toward each other, a horizontally disposedplatform for supporting a load receiving body, said platform beingprovided at the opposite ends thereof with extensions respectivelyadapted for accommodation within said channeled standards, said platformbeing adapted for vertical movement with respect to said vehicle frame,said channel posts constituting guides for said platform during saidvertical movement thereof, a vertically extending screw rotatablyjournalled in said vehicle frame and extending upwardly within each ofsaid channeled standards, a movable block in threaded engagement withsaid screw and adapted to travel vertically within each of saidstandards upon rotation of said screw, cable means respectivelyinterconnecting each of said vertically movable blocks with the oppositeextensions of said platform, the opposite extremities of each of saidvertically extending screws being provided with smooth surfaces, coilsprings respectively embracing the smooth surfaces of said screws forabsorbing the shock of the cross blocks as they reach the limit of theirmovement in one direction or the other and for automatically effectingthe threaded engagement of said cross blocks with the threaded portionof said screw when the operation of the screw is reversed, and gearmeans for actuating said screws in unison whereby to eifect the raisingor lowering of said platform.

3. In a vehicle of the character described, in combination, a mainvehicle frame, a pair of ver- -tically extending standards arrangedrespectively at the fore and aft ends of said frame, a verticallydisposed screw located within each of said standards, a cable blockaxially movable with respect to said screw upon rotation of the latterin one direction or the other, a platform for supporting a loadreceiving body arranged above said vehicle frame, the fore and af endsof said platform being suspended by cables respectively connected tosaid cable block and. passing over pulleys mounted in the top of eachstand ard, and means in said standards respectively constituting guidesfor the fore and aft ends of said platform.

4. In a vehicle of the character described, in combination, a mainvehicle frame, a pair of vertically extending standards of substantiallychanneled cross section arranged respectively at the fore and aft endsof said frame with the mouths of said channels presenting toward eachother, a horizontally disposed platform for supporting a load receivingbody, said platform being provided at opposite ends thereof with guideextensions adapted. respectively for reception within the mouths of saidchannels, elevating screws respectively provided within each of saidstandards, a cable block operatively associated with each screw, cablemeans interconnecting each cable block with one of said extensions ofthe platform whereby upon rotation of the screws in one direction oranother the platform is raised or lowered, and means provided in eachcable block for adjusting the effective length of each cable.

5. In a vehicle of the character described, in combination, a mainVehicle frame, a pair of vertically extending standards of substantiallychanneled cross section arranged respectively at the fore and aft endsof said frame with the mouths of the channels presenting toward eachother, a horizontally disposed platform for supporting a load receivingbody arranged immediately above said frame and provided with guideextensions at opposite ends thereof for reception within the mouths ofsaid channels, a pair of pulleys 'journalled within the upper end ofeach standard, a single length cable doubled upon itself and arrangedwith the free ends thereof traversing the pulleys in each standard, the

loopedends of each cable respectively engaging the aforesaid guideextensions of said platform, and elevating screw arranged within eachstandard, and a cable block axially movable upon each of said screwsupon rotation of the latter, the

said free ends of each cablebeing secured to each of said cable blocks,and means for commonly actuating said screws whereby to raise .or lowersaid platform.

6. In a vehicle of the character described, in combination, a mainvehicle frame,.a platform for supporting a load receiving body,elevating means operatively associated with the opposite ends of saidplatform whereby the latter may be raised or lowered, each of saidelevating means being characterized by the provision of a verticallydisposed screw, a cable block axially movable with respect to said screwand a cable connecting said cable block to one end of said platform, andmeans provided at opposite ends of said screw and operativeautomatically to absorb the shock of each cable block as it reaches thelimit of its movement in one direction or the other.

7. In a vehicle of the character described, in combination, a mainvehicle frame, a platform for supporting a load receiving body,elevating means operatively associated with the opposite ends of saidplatform whereby the latter may be raised or lowered, each of saidelevating means being characterized by the provision of a verticallydisposed screw the opposite extremities of which are provided withsmooth surfaces, a cable block axially movable with respect to saidscrew and a cable connectingsaid cable block to one end of saidplatform, and 'meanspro- THEODORE C. HARVEY.

